Enhanced visible light photocatalytic hydrogen evolution over porphyrin hybridized graphitic carbon nitride

Mei, Shunkang; Gao, Jianping; Zhang, Ye; Yang, Jiangbing; Wu, Yongli; Wang, Xiaoxue; Zhao, Ran; Zhai, Xiangang; Hao, Chaoyue; Li, Ruixia; Yan, Jing

doi:10.1016/j.jcis.2017.07.030

Cited by 58 publications

(23 citation statements)

References 43 publications

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“…For example, when 5,10,15,20-tetrakis(4-(hydroxyl)phenyl) porphyrin (TPPH) or Zn(II)-5,10,15,20-tetrakis(4- N -methylpyridyl)porphyrin ([ZnTMPyP] 4+ ) are loaded on the reduced graphene oxide (RGO) with a donor–acceptor type interaction, a rate of 2240 μmol·g –1 ·h –1 over 5 h and a rate of 2560 μmol·g –1 ·h –1 over 24 h have been achieved for TPPH-Pt/RGO . Noncovalent type μ-oxo-bis-iron(III) porphyrin ((FeTPP) 2 O)-loaded C 3 N 4 and 5,10,15,20-Tetrakis (4-carboxyphenyl) porphyrin (TCPP)-loaded Pt/C 3 N 4 produced 59.2 μmol after 4 h and a production rate of 1208 μmol·g –1 ·h –1 over 25 h . (Zinc-5-(4-carboxyphenyl)-10,15,20-tri(3-pridyl)porphyrin (ZnMT3PyP)-loaded Pt/C 3 N 4 displayed a stable hydrogen productivity of 400 μmol·h –1 over a period of 10 h .…”

Section: Introductionmentioning

confidence: 99%

Visible Light-Driven Dye-Sensitized Photocatalytic Hydrogen Production by Porphyrin and its Cyclic Dimer and Trimer: Effect of Multi-Pyridyl-Anchoring Groups on Photocatalytic Activity and Stability

Watanabe

Sun

Ishihara

et al. 2018

ACS Appl. Energy Mater.

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The monomer, dimer, and trimer of 5,15-diphenyl-10,20di(pyridin-4-yl)porphyrin are used to investigate the multi-anchoring eff ect on TiO2 for visible light-driven photocatalytic hydrogen production in a water medium. Further, the porphyrin trimer is prepared and analyzed by nuclear magnetic resonance (NMR) spectroscopy, absorption spectroscopy, electrochemical voltammetry, fast atom bombardment (FAB) mass spectroscopy, and density functional theory (DFT) computation. The results of this study indicate that the peak intensities of the absorption spectra increase as the number of porphyrin units increases, while changes could be barely observed in the highest occupied molecular orbital (HOMO)−lowest unoccupied molecular orbital (LUMO) gaps. The porphyrin dimer in a 1 wt % Pt-loaded TiO2 powder photocatalyst system exhibited optimal hydrogen production performance in a stable state over a period of 80 h and at a superior rate of 1023 mol•g −1 •h −1. Further, the stability of the photocatalytic system was systematically investigated using films containing dyes on 1 wt % Pt-loaded TiO2/FTO. For a film containing the dimer, almost no change was observed in the hydrogen-bond coordination mode of the dimer and the photocurrent during the photocatalytic reaction. However, the photocurrents of the monomer and trimer were altered during visible light irradiation without altering the coordination mode, indicating that the arrangements and orientations of the porphyrins on TiO2 surfaces were altered. These results indicate that the presence of multiple anchoring groups enhance the stability of the photocatalytic system and the rate of hydrogen production.

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Section: Introductionmentioning

confidence: 99%

Visible Light-Driven Dye-Sensitized Photocatalytic Hydrogen Production by Porphyrin and its Cyclic Dimer and Trimer: Effect of Multi-Pyridyl-Anchoring Groups on Photocatalytic Activity and Stability

Watanabe

Sun

Ishihara

et al. 2018

ACS Appl. Energy Mater.

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“…As shown in Figure S8, the hydrogen production of ZnD( p -NI)PP appeared similar in each cycle of the experiment, indicating the ZnD( p -NI)PP is highly stable and possesses good recycling ability. Moreover, the ηH 2 of linear-shaped porphyrin ZnD( p -NI)PP is comparable to the most efficient porphyrin-based photocatalysts under heterogeneous basic conditions reported yet. − In order to confirm the stability of the solid-state morphology of porphyrins, SEM pictures of the PSs containing porphyrins as photocatalysts irradiated after 5 h were recorded (Figures S9–S11). The morphology of SEM pictures of the PSs irradiated after 5 h remained similar to that of porphyrins drop-casted from its THF solution.…”

Section: Resultsmentioning

confidence: 73%

Self-Assembled Naphthalimide-Substituted Porphyrin Nanowires for Photocatalytic Hydrogen Evolution

Bodedla

Huang

Wong

et al. 2020

ACS Appl. Nano Mater.

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A linear 5,15-di(naphthalimide) substituted porphyrin ZnD(p-NI)PP is facilely self-assembled into nanowires in solid with well-defined morphology through the synergistic π−π stack interactions of both porphyrin and naphthalimide skeletons. The self-assembled porphyrin nanowires feature broadened light absorption, efficient separation and transfer of photogenerated charges, and enhanced photostability. As a consequence, the ZnD(p-NI)PP produced 108 times higher H 2 production rate (ηH 2 = 5.40 mmol g −1 h −1 ) than the control 5,15-diphenylporphyrin (ZnDPP) (ηH 2 = 0.05 mmol g −1 h −1 ) and 3.6-fold higher than the ZnT(p-NI)PP (ηH 2 = 1.50 mmol g −1 h −1 ) which bears four NI units and self-assembled into nanospheres in the solid. Additionally, the photocatalytic system of ZnD(p-NI)PP produced hydrogen evolution up to 50 h, while the hydrogen evolution of the ZnDPP photocatalytic system reached a plateau after 20 h.

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“…Some studies have also carried out the subsequent characterizations on samples containing Pt. For example, Mei et al prepared TCPP/Pt/g-C 3 N 4 and characterized the catalyst by PL, suggesting that the improved hydrogen production is because Pt inhibits the recombination of the photogenerated e − -h + pairs [66]. Ou et al characterized Pt/g-C 3 N 4 with photocurrent, EIS, and PL, and revealed that introducing Pt onto g-C 3 N 4 leads to better charge transfer and higher efficiency in e − -h + pairs separation, thus to an improved H 2 evolution rate [62].…”

Section: Discussionmentioning

confidence: 99%

“…Apparently, the PL intensity of D149/pCN is lower than that of pure pCN, indicating that the recombination of e − -h + pairs is confined due to the formation of D149/pCN. Furthermore, pCN-Pt and D149/pCN-Pt have much lower emission peaks compared with pCN and D149/pCN, which may be because Pt can not only restrict the recombination of e − -h + pairs, but also accelerate charge transfer [65][66][67].…”

Section: Reasons For Enhanced Activitymentioning

confidence: 99%

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g-C3N4 Sensitized by an Indoline Dye for Photocatalytic H2 Evolution

Chen

Liu

2021

Processes

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Protonated g-C3N4 (pCN) formed by treating bulk g-C3N4 with an aqueous HCl solution was modified with D149 dye, i.e., 5-[[4[4-(2,2-diphenylethenyl) phenyl]-1,2,3,3a,4,8b-hexahydrocyclopent[b]indol-7-yl] methylene]-2-(3-ethyl-4-oxo-2-thioxo-5-thiazolidinylidene)-4-oxo-thiazolidin-2-ylidenerhodanine, for photocatalytic water splitting (using Pt as a co-catalyst). The D149/pCN-Pt composite showed a much higher rate (2138.2 µmol·h−1·g−1) of H2 production than pCN-Pt (657.0 µmol·h−1·g−1). Through relevant characterization, the significantly high activity of D149/pCN-Pt was linked to improved absorption of visible light, accelerated electron transfer, and more efficient separation of charge carriers. The presence of both D149 and Pt was found to be important for these factors. A mechanism was proposed.

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Enhanced visible light photocatalytic hydrogen evolution over porphyrin hybridized graphitic carbon nitride

Cited by 58 publications

References 43 publications

Visible Light-Driven Dye-Sensitized Photocatalytic Hydrogen Production by Porphyrin and its Cyclic Dimer and Trimer: Effect of Multi-Pyridyl-Anchoring Groups on Photocatalytic Activity and Stability

Visible Light-Driven Dye-Sensitized Photocatalytic Hydrogen Production by Porphyrin and its Cyclic Dimer and Trimer: Effect of Multi-Pyridyl-Anchoring Groups on Photocatalytic Activity and Stability

Self-Assembled Naphthalimide-Substituted Porphyrin Nanowires for Photocatalytic Hydrogen Evolution

g-C3N4 Sensitized by an Indoline Dye for Photocatalytic H2 Evolution

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